Add TestExtensionsBrowserClient, move ProcessManagerTest to //extensions

chrome/chrome_tests_unit.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 535 matching lines @@
         '../extensions/browser/event_router_unittest.cc',
         '../extensions/browser/extension_error_test_util.cc',
         '../extensions/browser/extension_error_test_util.h',
         '../extensions/browser/extension_pref_value_map_unittest.cc',
         '../extensions/browser/extension_registry_unittest.cc',
         '../extensions/browser/file_highlighter_unittest.cc',
         '../extensions/browser/file_reader_unittest.cc',
         '../extensions/browser/info_map_unittest.cc',
         '../extensions/browser/lazy_background_task_queue_unittest.cc',
         '../extensions/browser/management_policy_unittest.cc',
+        '../extensions/browser/process_manager_unittest.cc',
         '../extensions/browser/process_map_unittest.cc',
         '../extensions/browser/quota_service_unittest.cc',
         '../extensions/browser/runtime_data_unittest.cc',
         '../extensions/browser/value_store/leveldb_value_store_unittest.cc',
         '../extensions/browser/value_store/testing_value_store_unittest.cc',
         '../extensions/browser/value_store/value_store_change_unittest.cc',
         '../extensions/browser/value_store/value_store_frontend_unittest.cc',
         '../extensions/browser/value_store/value_store_unittest.cc',
         '../extensions/browser/value_store/value_store_unittest.h',
         '../extensions/common/csp_validator_unittest.cc',
@@ skipping 386 matching lines @@
         'browser/extensions/external_policy_loader_unittest.cc',
         'browser/extensions/external_provider_impl_unittest.cc',
         'browser/extensions/external_provider_impl_chromeos_unittest.cc',
         'browser/extensions/favicon_downloader_unittest.cc',
         'browser/extensions/image_loader_unittest.cc',
         'browser/extensions/menu_manager_unittest.cc',
         'browser/extensions/pack_extension_unittest.cc',
         'browser/extensions/page_action_controller_unittest.cc',
         'browser/extensions/permissions_updater_unittest.cc',
         'browser/extensions/policy_handlers_unittest.cc',
-        'browser/extensions/process_manager_unittest.cc',
         'browser/extensions/sandboxed_unpacker_unittest.cc',
         'browser/extensions/standard_management_policy_provider_unittest.cc',
         'browser/extensions/tab_helper_unittest.cc',
         'browser/extensions/token_cache/token_cache_service_unittest.cc',
         'browser/extensions/updater/extension_cache_fake.h',
         'browser/extensions/updater/extension_cache_fake.cc',
         'browser/extensions/updater/extension_updater_unittest.cc',
         'browser/extensions/user_script_listener_unittest.cc',
         'browser/extensions/user_script_master_unittest.cc',
         'browser/extensions/webstore_inline_installer_unittest.cc',
@@ skipping 1910 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }